The KMS(Knowledge Management System) can be used for a wide range of cooperative, collaborative and hierarchy communities, virtual organizations and other virtual networks, to manage content, activities, interactions and workflows. With the support of KMS, users can extract and generate new knowledge, enhance, leverage and transfer knowledge in new outcomes providing new activity using new formats and interface. Industry recognizes the central importance of managing and sharing CAD data within the organization, and powerful PDM(Product Data Management) systems have been developed to address this need. A PDM system provides the visibility necessary for managing and presenting a complete BOM(Bill Of Materials). It facilitates the alignment and synchronization of all sources of BOM data, as well as all life-cycle phases, including the as-designed, as-planned, as-built and as-maintained states. Just as importantly, the PDM system should provide the change management capabilities that allow you to see the BOM before and after changes are made.